The Last Harvest by John Burroughs

Bergson seems always to have been more than half-convinced of the truth of spiritualism. When we are already half-convinced of a thing, it takes but little to convince us. Bergson argues himself into a belief in telepathy in this wise: "We produce electricity at every moment; the atmosphere is continually electrified; we move among magnetic currents. Yet for thousands of years millions of human beings have lived who never suspected the existence of electricity."

Millions of persons have also lived without suspecting the pull of the sun and moon upon us; or that the pressure of the atmosphere upon our bodies is fifteen pounds to the square inch; or that the coast of this part of the continent is slowly subsiding (the oscillations of the earth's crust); or without suspecting the incredible speed of the stars in the midnight sky; or that the earth is turning under our feet; or that electrons are shooting off from the candle or lamp by the light of which we are reading. There are assuredly more things in heaven and earth than are dreamed of in our philosophy, many of which we shall doubtless yet find out, and many more of which we shall never find out. Wireless messages may be continually going through our houses and our bodies, and through the air we breathe, and we never suspect them. Shall we, then, infer that the air around us is full of spirits of our departed friends? I hope it is, but I fail to see any warrant for the belief in this kind of reasoning. It does not lend color even to the probability, any more than it does to the probability that we shall yet be able to read one another's thoughts and become expert mind-readers. Mind-reading seems to be a reality with a few persons, with one in many millions. But I cannot therefore believe in spiritualism as I believe in the "defeat of the Invincible Armada. " Fleets have been defeated in all ages. Facts are amenable to observation and experiment, but merely alleged facts do not stand the laboratory tests.